An Assessment of Rock Pillar Stability in Tunnel Asymmetric Diverging Area using the Mohr-Coulomb Failure Theory

被引：1
|
作者：
Lee, Choul-Kyu [1 ]
Lee, Kang-Il [1 ]
Kang, Jae-Gi [2 ]
机构：
[1] Daejin Univ, Dept Civil Engn, 1007 Hoguk Ro, Pocheon Si 11159, Gyeonggi Do, South Korea
[2] Hong Ik Engn & Consultants Co Ltd, 15F Anyang Construct Tower,187 Simin Daero, Anyang Si 14049, Gyeonggi Do, South Korea
来源：
JOURNAL OF THE KOREAN GEOSYNTHETIC SOCIETY | 2016年 / 15卷 / 04期
关键词：
Tunnel asymmetric diverging area; Rock pillar; Numerical analysis; Safety factor chart;
D O I：
10.12814/jkgss.2016.15.4.017
中图分类号：
P5 [地质学];
学科分类号：
0709 ; 081803 ;
摘要：
This study assessed the behavior of rock pillar in tunnel asymmetric diverging area by using a three dimensional numerical analysis. The stability of pillar is very important for the ensure the stability of the tunnel asymmetric diverging area. Based on parameters affecting the behavior of rock pillar, this study evaluated different safety factors according to pillar width, depth and rock conditions. It turned out that as the rock pillar width increases, the change curve of safety factors in accordance with depth and rock conditions shows more of the nonlinear behavior. By the assessment of the minimum safety factor, a safety factor chart on the behavior of rock pillar in tunnel asymmetric diverging area was suggested.
引用
收藏
页码：17 / 23
页数：7
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